Jack



`Nvl, 1938 c. s, JOHNSTON 2,135,080

JACK Filed Dec. :51, 19:55

2o production of a simple and Patented Nov. 1, 1938 UNITED STATES PATENT oFFicE JACK Clarence S. Johnston,

by direct and mesn'e one-half per cent to G Amarillo, Tex., assignor, assignments, of one and uilla Phipps, Fort vWorth,

Phipps, Jr., pei-.cent to F. C. all of Pampa, Tex.

and forty-four and four-ninths Nelson and L. C. Bradford,

Application Deeember31,t193l5, Serial No. `57,049 6 Claims. (Cl..25410 8) This invention relates to jacks, and has for its object the production of a simple and eliicient automobile jack which is so constructed as to t under the bumper of an automobile and efficiently 5 lift the automobile without the necessity of placing the jack under the chassis or frame.

Another object of this invention is the production of a simple and efficient means for holding the lifting sleeve of the jack in an adjusted' position, which means may be easily released for allowing the lifting sleeve to drop out of engagement with the automobile bumper when it is desired to remove the jack.

A further object of this invention is the prog duction of a simple and efficient means for tying the spring to the chassis or frame of an automobile in a manner to cause the wheels and axle to be lifted with the chassis or frame.

A still further object of this invention is'the efficient means .for releasing the lifting dog as the operating handle of the jack is swung upwardly.

Other objects and advantages of the invention will appear throughout the following specification r and claims.

In the drawing:- Figure 1 is a side jack shown in an operative position withrespect to the chassis, axle, wheel and bumper of an auto- 30 mobile, certain parts being sliown'in section;

Figure 2 is an enlarged front elevation of the jack, the handle being shown in section;

Figure 3 is an irregularvertical section taken on line 3-3 of Figure 2; j

Figure 4 is a transverse sectional View taken on line 4-4 of Figure 3;

Figure 5 is a section taken on line 5-5 of Figure 1. l

By referring to the drawing, it will be seen 40 that A designates the chassis or frame of the automobile which chassis carries a conventional bumper B. A wheel C is shown carried bythe axle D, and a conventional spring E is shown supporting the chassis or frame A yupony the axle D. f

A chain I is anchored in engagement with the chassis A, as at I I, and this chain Il) is adapted to be passed around the spring E in the manner as shown in Figure l,l and also hooked, as kat when it is desired to jack up the automobile through the medium of the bumper engaging jack J. Through the medium of the chain I 0,

it will be seen that when the chassis A is lifted, the spring E, axle D, and wheelC will also be lifted. When the jack J is not being used, the

elevation of the improvedY `tion. The Asleeve chain Il) may,- if desired, be wound about the chassis A and fastened out of contact with the spring E.

The jack J comprises a base I3, which carries the lower end of the vertical standard E5. standard I is preferably of a hollow metal structure havingapertures I6 formed along onerside, as shown in Figures 2 and 3.

A lifting shank or sleeve I1 is slidably mounted upon the standard I5, and this lifting shank or sleeve I1 is provided with an upwardly extending spaced lifting. hookl which is carriedv by a swivelled collar I4. A pair of dog supporting ears I9 are carried by one side of the shank i1, anda latching dog 20 is pivoted upon the ears I9? by means vof a journal pin 2l. The Vlatcl'ling dogV 20 is Vprovided with a toothed end 22 for extending through the aperture 23 in the sleeve I1, and engaging one of the notches or apertures I 6 for holding the sleeve I1 in a vertically adjusted position. VA colspring 2G engages the upper end of the dog 22 for normally holding the toothed end V22 in a locking engagement with one ofthe apertures 23. A nat spring 25 is adapted to catch over the upper end of the dog 20 and holdthe dogY 2li in a disengaging position when the dog 20 is swung outwardly, as shown in dotted lines in Figure 3. The dog 2li is .provided with finger holds or grips 20a to facilitate the swinging of the dog 20'to a disengaged posi- I1 is keyed as at Ila to the standard I5 to permit the sleeve I1 to freely slide and at the same time hold the sleeve I1 against rotation upon the standard I5.

By carefully considering Figure 1, it will be noted that theu'pwardly extending liftingy hook I8 is Vsecured to the collar I4 at its lower end and is spaced fromthe collar. The upper end of the liftinghook I8 terminates in approximate alignment with the upper end of the collar I thereby providing a pocket of considerable depth Afor receiving a bumper of an automobile. Because of this structure and the fact that the bumper of an automobile may fit into the pocket,'as shown in Figure 1, the bumper will be held in a vertical position or an upright position against accidentally fallingaway from a `bumper which it engages while the jack is being adjusted to a lifting position.Y No other securing means is necessary.

The sleeve I1 carries a pair of laterally extending vjournal ears 26 uponl the sides thereof, as'

The

A lifting dog 3D is pivotally mounted upon the pin 3l carried by the ears 32 of the neck 28, and a spring 33 engages the dog 30 to urge the dog 3D normally into engagement lwith the V.notches or apertures i6 of the standard I5.k The sleeve VI1 carries a projecting lug 34 near its lower end below the ears 26, and the lug 34 extends out'- wardly toward the dog 3G. The dog 30 also car-Y ries a lug 35 upon its inner is adapted to engage the lug 3B as the handle29 to drop downwardly.

The operation of the jack is as follows#- The chain I0 is fastened to the chassis A and spring E, as `shown in Figure 1, and the hook I8 is placed under the bumper B with lthe jack J resting, as shown also in Figure 1. handle 29 is then forced downwardly causingthe dog 30 to engage one of the apertures I6, and as this movement continues, the sleeve l1 will be raised vertically, the dog 20 also engaging one of the apertures 16 for preventing the sleeve from sliding downwardly when the operating handle 29 is raised to allow the dog 30 to engage the next higher aperture I6. This operation is continued until the sleeve I1 has raised the bumper B to the desired height and the wheel C has been lifted from the ground.

When it is desired to lower the jack, the dog 20 may be swung outwardly and the flat spring 25 will engage the upper end of the dog 20, to hold the dog 20 out of engagement with the standard I5. The handle 29 is then swung upwardly to the position shown in 'full lines in Figure 3, and as the dog 30 is kicked out of engagement with one of the apertures 16 of the standard l5, the sleeve I1 will drop to a lowered position.A

From the foregoing description, it'will be seen that a simple and efcient jack has been producedl for lifting an automobile without the necessity of crawling or reaching under the vehicle in orderV to place the jack in position, and also that the jack may be easily released simply by swinging the cam lever 25 to the position shown in Figure 5.

Certain detail changes in the construction of the device may be employed Without departing from the spirit of the invention, so long as such changes fall within the scope of the appended claims.

Having described the invention, what is claimed as new is: 1

l. A jack of the class described comprising a standard, said standard having vertically aligned apertures, a sleeve slidable'upon said standard, latching means for holding said sleeve in an ad justed position upon said standard, a releasable' spring catch for holding said latching means in an inoperative position, a neck pivotally mounted upon said sleeve below said latching means, a

spring pressed lifting dog carried by said'neck for' engaging said apertures and lifting said sleeve, a handle engaging said neck, and means adapted to engage said lifting dog and mounted adjacent thereto for automatically moving said lifting dog to a disengaging position as said handle is swung upwardly.

2. A jack of the class described comprising a' standard, said standard having vertically aligned ;,:;spring pressed lifting `engaging said apertures and lifting said sleeve, a face and this lug 35 :handle engaging said neck, and a lug carried by 4said sleeve and adapted to engage said lifting dog is swung upwardly to the position shown in full lines in Figure 3 for kicking the dog 30 to a dise" engaged position, thereby allowing the sleeve I1 The operating apertures, a sleeve slidable Aupon said standard, latching means for holding said sleeve in an adjusted position upon said standard, a releasable and mounted adjacent thereto for automatically as said handle is swung upwardly.

3. A jack of the class described comprising a standard, said standard having vertically aligned apertures,r a sleeve slidable upon said standard, latching means for holding said sleeve in an ad- 'iusted position upon said standard, a releasable spring catch for holding said latching means in an inoperative position, a neck pivotally mounted upon said sleeve below said latching means, a spring pressed lifting dog carried by said neck for engaging said apertures and lifting said sleeve, a handle engaging said neck, a lug carried by said sleeve, and said lifting dog having a lug upon its inner face adapted to engage said lug on said sleeve for moving said lifting dog to a disengaged position when said handle is moved to a raised position.

4. A jack of the class described comprising a standard, a sleeve slidably mounted vertically upon said standard, latch means for holding said sleeve against accidental downward sliding movement, an operating lever pivoted upon said sleeve, a lifting dog pivoted upon said lever, said standard having means engageable by the dog whereby the sleeve will be lifted vertically as said dog engages the standard and said lever is swung, and means engageable with said lifting dog when said lever is swung to a predetermined lifted position for automatically kicking said lifting dog out of engagement with said standard.

5. A jack of the class described comprising a standard, a sleeve slidably mounted vertically upon said standard, means carried by saidsleeve for engaging and lifting an object, latch means for holding said sleeve against accidental downward sliding movement, an operating lever pivotedV upon said sleeve, a lifting dog pivoted upon said lever, said standard having means engageable by the dog whereby the sleeve will be lifted vertically as said dog engages the standard and said lever is swung, and means carried by said sleeve for engaging the lifting dog when said lever is swung to a predetermined lifted position for automatically kicking said lifting dog out of engagement with said standard.

6. A jack of the class described comprising a standard, a sleeve slidably mounted vertically upon said standard, latch means for holding said sleeve against accidental downward sliding movement, an operating lever pivoted upon said sleeve, a lifting dog pivoted upon said lever, said standard having means engageable by the dog whereby the sleeve will be lifted vertically as said dog engages the standard and said lever is swung, a lug carried by said sleeve, a lug carried by the inner face of said lifting dog and adapted to contact with said first mentioned'lug for automatically kicking said lifting dog out of engagement with said standard.

CLARENCE S. JOHNSTON.

' moving said lifting dog to a disengaging position 

